Some questions about linking 64-bit programs on windows

[Mikko]

I'm using DMD 2.064.2 and 64-bit Windows 8.1. I have VS2013 and 
Windows SDK 8.1 installed. I'm running DMD from the VS2013 
developer console.

First of all there's a bug in sc.ini (line 70) when using these 
program versions above. The platform libraries are under winv6.3 
subdirectory instead of win8. If you don't fix that, you get 
shell32.lib not found errors when linking.

I'm trying to link a very simple 64-bit GLFW program. In the end 
I got everything working with following command (64-bit static 
glfw3.lib is in the same directory):

dmd -m64 app.d glfw3.lib opengl32.lib user32.lib gdi32.lib 
-L/NODEFAULTLIB:libcmt.lib

Some questions:

There were no instructions anywhere to include user32 and gdi32, 
but the linking failed without them. Is that normal?
There was conflict with msvcrt.lib and libcmt.lib. Removing 
libcmt worked. Why are they both included and is that normal?
Is it OK to give the library names straight to dmd instead of the 
linker? Am I assuming right that the "opengl32.lib user32.lib 
gdi32.lib" part is automagically linking to dynamic (DLL) 64-bit 
windows libraries?